Smart Electric Vehicle (EV) Charging legislation news

  • 13 September 2021
  • 8 replies

Userlevel 5
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A bit about the upcoming smart charging legislation, some of which is due to become law Spring 2022.

8 replies

Userlevel 7

Really interesting news in terms of ensuring that all new EV chargers should be smart.


Thanks for posting here, @Jeffus!


Sure our EV owners here will agree, this certainly sounds like a step in the right direction. What do you make of this news EVers - @sylm_2000, @MrPuds, @Transparent, @PeterR1947, @tesla_model_3, @Jequinlan?

Userlevel 6
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My zappi has smart capability although it isn’t used at present; The Wallbox charger I got through the V2G trial has and it is being used, when a firmware issue has been resolved CrowdCharge will be managing the charging/discharging scenario completely.  I will be able to choose a minimum charge level and request a full charge for a particular day if I’m going on a long journey the following day but the process of getting there is not under my control.

Userlevel 7
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Yes - it looks like HMG policy is heading in the right direction. Remember this still has to be drafted into legislation and the timescales have already slipped.

So if I was to abide by this strategy to install a ‘smart’ charger, what would I need from my Energy Supplier?


1: a genuine Time Of Use tariff. I wouldn’t want to have a Smart charger where my Supplier had the capability to feed electricity to my EV battery in such a way that I was financially worse off.

You think that wouldn’t happen?

Well it’s within the T&Cs of the existing PowerVault Storage Battery Trial in which I’m a participant. I don’t think it was intentional… it’s just that OVO failed to notice the significant cost increases to the customers. :confounded:


2: The charging schedules need to reflect the actual supply/demand statistics for my area, rather than just blithely follow the whole-GB figures for National Grid.

I live on the Western edge of an area (Cornwall) which exhibits an abundance of renewable power which can’t be fed back through Grid Supply Point transformers to the rest of the country. My Smart charger ‘on’ periods need to track and follow that regional generation.

It isn’t really that difficult. The energy-mix data and a 1 week look-ahead forecast are readily available from my 33kV Bulk Supply Point and have been so for the past 6 + years.


3: I need a charging schedule which doesn’t create over-loading of my local substation or its 440v feeds to houses (particularly relevant for underground cables).


4: I need a schedule which doesn’t create additional losses at the substation by phase imbalance and harmonics. There’s no point sending control signals to charge my EV if that wastes energy as heat in the transformer windings because domestic chargers are single-phase devices.

You think that wouldn’t happen?

Well it did when HMG introduced FIT payments for home-owners to install PV Solar Panels on their roofs! Substation losses doubled over the following two decades. :face_palm_tone1:


Is all this feasible?

Yes. It may cost to do so, but Kaluza should be in a position to provide OVO with the required capability by using the Flex Platform - an advantage available to few other Energy Suppliers.

Do I think it will happen in time for the new law to be implemented next year (2022)?

No… because development work on the Flex Platform has been concentrated on financial benefits to OVO Group Ltd and attracting additional investment.

It needs a very rapid change of direction to redress the balance.


Us customers are more prepared and willing to embrace the requirement for mandatory Smart chargers than OVO is.

Userlevel 7

Nice share, Jeffus. 


As Jess mentioned, this is a key call out:


“Government will mandate that all private chargepoints must be smart.”


I need a bit of help to understand this one:


“Government will mandate that, during set-up, chargepoints must require EV drivers to set charging preferences and schedules. In addition, these schedules must be pre-set to not charge at peak times.


For anyone on Flex, they can set a time that they want the charging to be done by and the platform will work out when to draw energy from the grid. Great. But anyone not on Flex or an equivalent,  I assume households would able to override preferences to charge at peak time if they urgently need some juice...


@Transparent will be pleased to see this point:


“Government will mandate a randomised delay function, to help address grid stability concerns arising from smart charging.”



Userlevel 7

Ahhh in the time it’s taken me to write that comment, Transparent has already replied. Typical! 

Userlevel 7
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“Government will mandate a randomised delay function, to help address grid stability concerns arising from smart charging.”

That should be achieved by default because the same document also reads:

12; [...] The smart metering system remains the lead option for
delivering smart charging…

Except that Kaluza opted to ignore the benefits of the randomisation system built into all Smart Meters and implemented via the Auxiliary Load Control Switching. Instead Flex provides timing solely via its encrypted commands carried over the internet.

It may not be capable of interception by a malicious 3rd party, but it’s far too easily disrupted and would therefore leave open the possibility of damage to our National Grid by a hostile foreign adversary. The more EVs we have being connected to Smart chargers using only internet commands, the more vulnerable we become.

Userlevel 7
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As a central figure in the earlier V2G Trial, I’d also be interested to hear what @D10hul has to say about this strategy from the Government.

Userlevel 7

Related discussion on this just posted: